Shaft vibration absorber

Abstract

A shaft vibration absorber for absorbing vibrations of a shaft includes an elastomer body that is reached through by a central longitudinal centre axis. In embodiments, the elastomer body includes holding geometries that protrude in the radial direction and extend in the longitudinal direction for pressing the shaft vibration absorber to the shaft. The holding geometries may be arranged in each case in two first angle windows that lie opposite one another with regard to the longitudinal centre axis with a width of in each case at most 90°. With embodiments, the shaft vibration absorber can configure a radial pressing force of the shaft along a first tuning axis that runs in the radial direction, and the radial pressing force may be greater than a pressing force in a spatial direction that differs therefrom and runs in the radial direction.

What is claimed: 
     
       1. A shaft vibration absorber for absorbing vibrations of a shaft, comprising:
 an elastomer body which is reached through by a central longitudinal centre axis, the elastomer body having holding geometries which protrude in the radial direction and extend in the longitudinal direction for pressing the shaft vibration absorber to said shaft, and the elastomer body is free from an integrally joined connection to a stabilizing element, 
 wherein the holding geometries are arranged in each case in two first angle windows which lie opposite one another with regard to the longitudinal centre axis with a width of in each case at most 90°, the shaft vibration absorber is configured to generate a radial pressing force with the shaft along a first tuning axis which runs in the radial direction, and the radial pressing force is greater than a pressing force in a spatial direction which differs therefrom and runs in the radial direction. 
 
     
     
       2. The shaft vibration absorber according to  claim 1 , wherein at least one of the holding geometries has at least one longitudinal holding web. 
     
     
       3. The shaft vibration absorber according to  claim 1 , wherein the two first angle windows enclose at least two second angle windows with one another in the circumferential direction. 
     
     
       4. The shaft vibration absorber according to  claim 3 , wherein the second angle windows are configured as intermediate clearances or comprise intermediate clearances and/or are free from holding geometries which primarily serve for pressing to the shaft. 
     
     
       5. The shaft vibration absorber according to  claim 1 , wherein the holding geometries are arranged in a rotationally symmetrical manner with regard to the longitudinal centre axis. 
     
     
       6. The shaft vibration absorber according to  claim 5 , wherein there are two holding geometries. 
     
     
       7. The shaft vibration absorber according to  claim 5 , wherein the holding geometries are arranged in a mirror-symmetrical manner with regard to a central longitudinal centre plane. 
     
     
       8. The shaft vibration absorber according to  claim 5 , wherein there are two holding geometries, and the holding geometries are arranged in a mirror-symmetrical manner with regard to a central longitudinal centre plane. 
     
     
       9. The shaft vibration absorber according to  claim 1 , wherein the angular sum of the second angle windows with regard to the longitudinal centre axis in a cross section of the shaft vibration absorber is at least 180°. 
     
     
       10. The shaft vibration absorber according to  claim 1 , wherein the angular sum of the second angle windows with regard to the longitudinal centre axis in a cross section of the shaft vibration absorber is at least 220°. 
     
     
       11. The shaft vibration absorber according to  claim 1 , wherein the angular sum of the second angle windows with regard to the longitudinal centre axis in a cross section of the shaft vibration absorber is at least 240°. 
     
     
       12. The shaft vibration absorber according to  claim 1 , wherein the angular sum of circumferential-side holding faces of the holding geometries with regard to the longitudinal centre axis in a cross section is at most 180°. 
     
     
       13. The shaft vibration absorber according to  claim 1 , wherein the angular sum of circumferential-side holding faces of the holding geometries with regard to the longitudinal centre axis in a cross section is at most 160°. 
     
     
       14. The shaft vibration absorber according to  claim 1 , wherein the angular sum of circumferential-side holding faces of the holding geometries with regard to the longitudinal centre axis in a cross section is at most 140°. 
     
     
       15. The shaft vibration absorber according to  claim 1 , wherein the angular sum of circumferential-side holding faces of the holding geometries with regard to the longitudinal centre axis in a cross section is at most 120°. 
     
     
       16. The shaft vibration absorber according to  claim 1 , wherein the shaft vibration absorber is free from a stabilizing element, and the holding geometries extend between the absorber mass and its respective holding face and/or in the radial extent without a stabilizing element connected in between. 
     
     
       17. The shaft vibration absorber according to  claim 1 , wherein, in the unloaded premounting state of the shaft vibration absorber, holding faces lie on a first imaginary cylindrical surface with a first cylinder diameter and, in the mounting state of the shaft vibration absorber, in which it can be pressed to the shaft, the holding faces can lie on a second imaginary cylindrical surface with a second cylinder diameter, either the second diameter is at most 0.95 times the size of the first diameter, or the first diameter is at most 0.95 times the size of the second diameter. 
     
     
       18. The shaft vibration absorber according to  claim 17 , wherein either the second diameter is at most 0.90 times the size of the first diameter, or the first diameter is at most 0.90 times the size of the second diameter. 
     
     
       19. The shaft vibration absorber according to  claim 17 , wherein either the second diameter is at most 0.85 times the size of the first diameter, or the first diameter is at most 0.85 times the size of the second diameter. 
     
     
       20. The shaft vibration absorber according to  claim 1 , wherein the elastomer body has at least one radial stop which protrudes in the radial direction in the second angle window, which is configured such that, in the mounting state, the at least one radial stop has a smaller extent in the radial direction than the holding geometries. 
     
     
       21. An assembly, comprising
 a shaft, and 
 a shaft vibration absorber according to  claim 1  which is pressed to the shaft via holding faces of holding geometries.